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/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package discovery
import (
"fmt"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/runtime"
)
// UnstructuredObjectTyper provides a runtime.ObjectTyper implmentation for
// runtime.Unstructured object based on discovery information.
type UnstructuredObjectTyper struct {
registered map[unversioned.GroupVersionKind]bool
}
// NewUnstructuredObjectTyper returns a runtime.ObjectTyper for
// unstructred objects based on discovery information.
func NewUnstructuredObjectTyper(groupResources []*APIGroupResources) *UnstructuredObjectTyper {
dot := &UnstructuredObjectTyper{registered: make(map[unversioned.GroupVersionKind]bool)}
for _, group := range groupResources {
for _, discoveryVersion := range group.Group.Versions {
resources, ok := group.VersionedResources[discoveryVersion.Version]
if !ok {
continue
}
gv := unversioned.GroupVersion{Group: group.Group.Name, Version: discoveryVersion.Version}
for _, resource := range resources {
dot.registered[gv.WithKind(resource.Kind)] = true
}
}
}
return dot
}
// ObjectKind returns the group,version,kind of the provided object, or an error
// if the object in not *runtime.Unstructured or has no group,version,kind
// information.
func (d *UnstructuredObjectTyper) ObjectKind(obj runtime.Object) (unversioned.GroupVersionKind, error) {
if _, ok := obj.(*runtime.Unstructured); !ok {
return unversioned.GroupVersionKind{}, fmt.Errorf("type %T is invalid for dynamic object typer", obj)
}
return obj.GetObjectKind().GroupVersionKind(), nil
}
// ObjectKinds returns a slice of one element with the group,version,kind of the
// provided object, or an error if the object is not *runtime.Unstructured or
// has no group,version,kind information. unversionedType will always be false
// because runtime.Unstructured object should always have group,version,kind
// information set.
func (d *UnstructuredObjectTyper) ObjectKinds(obj runtime.Object) (gvks []unversioned.GroupVersionKind, unversionedType bool, err error) {
gvk, err := d.ObjectKind(obj)
if err != nil {
return nil, false, err
}
return []unversioned.GroupVersionKind{gvk}, false, nil
}
// Recognizes returns true if the provided group,version,kind was in the
// discovery information.
func (d *UnstructuredObjectTyper) Recognizes(gvk unversioned.GroupVersionKind) bool {
return d.registered[gvk]
}
// IsUnversioned returns false always because *runtime.Unstructured objects
// should always have group,version,kind information set. ok will be true if the
// object's group,version,kind is registered.
func (d *UnstructuredObjectTyper) IsUnversioned(obj runtime.Object) (unversioned bool, ok bool) {
gvk, err := d.ObjectKind(obj)
if err != nil {
return false, false
}
return false, d.registered[gvk]
}
var _ runtime.ObjectTyper = &UnstructuredObjectTyper{}
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